DIAPHRAGM AND STETHOSCOPE HEAD ASSEMBLY THEREOF
The present disclosure provides a stethoscope head assembly. The stethoscope head assembly comprises a diaphragm and a main body. The diaphragm comprises a membrane portion, and a sealing portion extending from a periphery of the membrane portion and comprising a ring-shaped raised platform and a connecting portion extending downwardly from a periphery of the ring-shaped raised platform. The main-body is detachably coupled to the diaphragm and comprises a sound gathering member. The connecting portion and the ring-shaped raised platform of the diaphragm cooperatively form a ring-shaped receiving slot for receiving the sound gathering member of the main body.
The present disclosure claims priority to U.S. provisional patent application No. 62/514,037 filed on Jun. 2, 2017, U.S. provisional patent application No. 62/584,215 filed on Nov. 10, 2017, and Taiwanese invention patent application No. 106130520 filed on Sep. 6, 2017, the entirety of which are incorporated herein by reference.
FIELD OF THE INVENTIONThe present disclosure relates to a stethoscope head assembly and a diaphragm for the stethoscope head assembly.
BACKGROUND OF THE INVENTIONA number of different stethoscope head assemblies are commercially available. Conventional stethoscope head assembly usually is consisting of a main body, a polycarbonate (PC) diaphragm, and a ring-shaped or an O-ring-shaped metal. The main body is coupled to the PC diaphragm by threading the O-ring-shaped metal with the main body.
A setback of the conventional stethoscope head assembly is the process of assembling the components of the stethoscope head assembly. The assembly process is time-consuming and difficult for multiple components to be accurately aligned with a particular area of the diaphragm. The assembly between the PC diaphragm and the O-ring are sometimes not sealed properly, causing a small conducting surface of the PC diaphragm, thus the sound gathering ability of the conventional stethoscope head assembly is poor.
Another setback of conventional stethoscope head assembly is frictional noises generated when being used to auscultate the human body. When the stethoscope head assembly is removed from a body of the patient, slide through the body, or changed to another side of the stethoscope head assembly, frictional noises often occur, and the volume of the frictional noises is correlated to the size of a frictional area. The frictional area between a patient and the diaphragm is a contact surface of the diaphragm.
Yet another setback of conventional stethoscope head assembly occurs in the replacement of diaphragms. After an examination by the stethoscope head assembly on the body is completed, conventional diaphragm of stethoscope of the stethoscope head assembly needs to be either replaced or disinfected by alcohol after being used to ensure hygiene and prevent infection. When replacing the diaphragm, poor sealing between the diaphragm and the main body often occurs, which may cause bad auscultating experience.
Additionally, because conventional PC diaphragm is made of a hard material, the process of forcing the diaphragm of the stethoscope head assembly onto the patient often causes discomfort.
Furthermore, considering the various diagnostic applications of the physiological sounds from the chest, it is desirable for the physician to switch between high and low frequencies when using the stethoscope head assembly. The physician usually switches sides of the stethoscope head assembly to detect high and low frequency sounds. However, the process of switching sides of the stethoscope head assembly makes it difficult to locate the precise area of the body of the patient.
BRIEF SUMMARY OF THE INVENTIONIn view of the above-described circumstances, the necessary objective of the present disclosure is to provide a stethoscope head assembly that has excellent sound gathering ability, low frictional noises and easy to switch between high and low frequencies.
An embodiment of the present disclosure provides a diaphragm for a stethoscope head assembly. The diaphragm comprises a membrane portion and a sealing portion. The sealing portion extends from a periphery of the membrane portion and comprises a ring-shaped raised platform and a connecting portion extending downwardly from a periphery of the ring shaped raised platform. The connecting portion and the ring-shaped raised platform cooperatively form a ring-shaped receiving slot.
In a preferred embodiment, the diaphragm is made of an elastic material with a Shore A hardness of 30 to 80.
In a preferred embodiment, the elastic material comprises silicon, thermoset rubber, thermoplastic rubber, or a combination thereof.
In a preferred embodiment, a thickness of the membrane portion is less than a thickness of the ring-shaped raised platform of the sealing portion.
In a preferred embodiment, the thickness of the membrane portion falls within a range of 0.05 mm to 1 mm.
In a preferred embodiment, a diameter of the membrane portion falls within a range of 30 mm to 50 mm.
In a preferred embodiment, the ring-shaped raised platform comprises a platform top surface, a platform bottom surface, a ring-shaped first side wall, and a ring-shaped second side wall. The ring-shaped first side wall protrudes inwardly from a periphery of the platform top surface. The ring-shaped second side wall protrudes outwardly from another periphery of the platform top surface. The connecting portion comprises a latching portion and a resisting portion coupled between the latching portion and the ring-shaped raised platform.
In a preferred embodiment, the ring-shaped first side wall of the ring-shaped raised platform and a top surface of the membrane portion form an angle, the angle falls with a range of 120 degrees to 180 degrees.
In a preferred embodiment, the sealing portion further comprises a first matching element arranged adjacent to the membrane portion at a bottom surface of the ring-shaped raised platform.
In a preferred embodiment, the first matching element is a recess.
In preferred embodiment, the first matching element is a protrusion.
In a preferred embodiment, the diaphragm further comprises a coating layer disposed on a bottom surface of the membrane portion and the ring-shaped raised platform.
In a preferred embodiment, the coating layer comprises silicon, soft touch paint, thermoplastic polyurethane, thermoplastic rubber, or a combination thereof.
In a preferred embodiment, a thickness of the coating layer of the diaphragm falls within a range of 0.04 mm to 0.1 mm.
In a preferred embodiment, the coating layer is disposed on the bottom surface of the membrane portion and the ring-shaped raised platform.
In a preferred embodiment, the diaphragm is manufactured by 3D printing.
Another embodiment of the present disclosure provides a stethoscope head assembly. The stethoscope head assembly comprises a diaphragm and a main body. The diaphragm comprises a membrane portion, and a sealing portion extending from a periphery of the membrane portion. The sealing portion comprises a ring-shaped raised platform, a first matching element arranged adjacent to the membrane portion at a bottom surface of the ring-shaped raised platform, and a connecting portion extending downwardly from a periphery of the ring-shaped raised platform. The main-body is coupled to the diaphragm and comprises a sound gathering member. The sound gathering member comprises a second matching element aligned to conform in shape with the first matching element of the ring-shaped platform at a top surface of the sound gathering member. The connecting portion and the ring-shaped raised platform of the diaphragm cooperatively form a ring-shaped receiving slot for receiving the sound gathering member of the main body.
In a preferred embodiment of the present disclosure, the stethoscope head assembly further comprises a relaxed state where the first matching element is not in contact with the second matching element, and a compressed state where the first matching element is in contact with the second matching element and buts against the second matching element. The stethoscope head assembly is transformed from the relaxed state to the compressed state by an external pressure.
In a preferred embodiment, a shape of the second matching element substantially corresponds to a shape of the first matching element.
In a preferred embodiment, the second matching element is a protrusion.
In a preferred embodiment, the second matching element is a recess.
In a preferred embodiment, an outer diameter of the ring-shaped receiving slot is substantially equal to an outer diameter of the sound gathering member.
In a preferred embodiment, the sound gathering member further comprises an engaging portion. The engaging portion is arranged on a periphery of the sound gathering member, and wherein a thickness of the engaging portion of the sound gathering member is substantially equal to a height of the ring-shaped receiving slot.
Another embodiment of the present disclosure provides a disposable capsule for containing a diaphragm for a stethoscope head assembly. The disposable capsule comprises a blister for disposing the diaphragm and a sealing film configured to seal the blister.
Another embodiment of the present disclosure provides a package for containing a plurality of disposable capsules. Each of the disposable capsules contains a diaphragm for a stethoscope head assembly. The package comprises a tearing portion arranged on a surface of the package and configured to form an opening after being torn off, and a plurality of the disposable capsules disposed in the package.
The accompanying drawings illustrate one or more embodiments of the present disclosure and, together with the written description, explain the principles of the present disclosure. Wherever possible, the same reference numbers are used throughout the drawings referring to the same or like elements of an embodiment.
In accordance with common practice, the various described features are not drawn to scale and are drawn to emphasize features relevant to the present disclosure. Like reference characters denote like elements throughout the figures and text.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTSThe present disclosure will now be described more fully hereinafter with reference to the accompanying drawings illustrating various exemplary embodiments of the invention. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Like reference numerals refer to like elements throughout.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” or “includes” and/or “including” or “has” and/or “having” when used herein, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.
The term “substantially” means essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but may have one or more deviations from a true cylinder. The term “comprising” or “containing” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. The terms “first”, “second”, “third” and other terms in the present disclosure are only used as textual symbols as the circumstances may require, but such a practice of ordination is not limited to using only these terms. It should be further noted that these terms can be used interchangeably.
It will be understood that the terms “and/or” and “at least one” include any and all combinations of one or more of the associated listed items. It will also be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, parts and/or sections, these elements, components, regions, parts and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, part or section from another element, component, region, layer or section. Thus, a first element, component, region, part or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to
The membrane portion 11 and the sealing portion 12 cooperatively form a concave inducting space 13 as shown in
The diaphragm 10 can be made of an elastic material, to facilitate comfortable use of the diaphragm 10. The elastic material may comprise a material with characteristics of thermal insulation and a Shore A hardness of substantially 30 to 80. The elastic material may also have a thermal deformation temperature of at least above 50 degrees, a high impact strength, and a high wear resistance. The elastic material may be silicon, thermoset rubber, thermoplastic rubber, or a combination thereof. Therefore, the characteristics of the material of the diaphragm 10 provide sufficient tension for the diaphragm 10 to be fixed on the main body 20, and to improve a sound gathering effect of the diaphragm 10 at a wide range of frequencies. It is also convenient to remove or replace the diaphragm 10 from the main body 20.
In the exemplary embodiment, the diaphragm 10 may be circular. In another exemplary embodiment, the diaphragm 10 may also be elliptical. The diaphragm 10 may be designed to have a suitable size and/or shape, to accommodate the main body 20.
Referring to
The main body 20 comprises a sound gathering member 21 and a sound conducting member 22 protruding downward from a center of the gathering member 21. The sound gathering member 21 may be integrally formed with the sound conducting member 22. An engaging portion 211 is arranged at a periphery of the sound gathering member 21. The sound gathering member 21 comprises a top surface 212 facing and directly contacting the diaphragm 10 when the diaphragm 10 is fixed to the main body 20. The main body 20 is substantially a funnel, and the main body 20 may be also made of an elastic material or a rigid material. The surface of the main body 20 may be partly covered by a layer of aluminum alloy. The sound conducting member 22 comprises a sound conducting hole 221 linked with a sound conducting tube 222. The top surface 212 of the sound gathering member 21 has a second matching element 213 adjacent to the engaging portion 211.
Referring to
The ring-shaped raised platform 121 comprises a platform top surface 1211, a platform bottom surface 1212, a ring-shaped first side wall 1213, and a ring-shaped second side wall 1214. The ring-shaped first side wall 1213 protrudes inwardly from an inner periphery of the platform top surface 1211, and the ring-shaped second side wall 1214 protrudes outwardly from an outer periphery of the platform top surface 1211. A first matching element 1215 is arranged adjacent to the membrane portion 11 at the platform bottom surface 1212 of the raised platform 121. The ring-shaped first side wall 1213 of the raised platform 121 extends from the top surface 111 of the membrane portion 11. The ring-shaped first side wall 1213 of the raised platform 121 and the top surface 111 of the membrane portion 11 cooperatively form the concave inducting space 13 as shown in
The ring-shaped first side wall 1213 is inclined. The ring-shaped first side wall 1213 protrudes away from a periphery of the top surface 111 of the membrane portion 11. The thickness of the ring-shaped first side wall 1213 is increased gradually in a direction away from the membrane portion 11, to avoid rupture of the diaphragm 10 during assembly. The ring-shaped first side wall 1213 with gradual thickness variation can provide elasticity for a user to change between a low or a high frequency mode of the stethoscope head assembly 1. The ring-shaped first side wall 1213 of the raised platform 121 and the top surface 111 of the membrane portion 11 form an angle A1 (shown in
In
The sound conducting hole 221 has a diameter of no larger than ½ of an outer diameter of the sound gathering member 21. The bottom of the sound conducting hole 221 is linked with the sound conducting tube 222. The sound conducting tube 222 has an exit on the lateral side of the sound conducting member 22, and the sound conducting tube 222 protrudes inward from the lateral side exit to the bottom of the sound conducting hole 221.
Referring to
The cross-section of the sound gathering member 21 comprises the second matching element 213 and the engaging portion 211. The outer diameter of the sound gathering member 21 is at least equal to or greater than an outer diameter of the receiving slot 123. A thickness D3 of the engaging portion 211 of the sound gathering member 21 is substantially equal to a height D4 of the receiving slot 123.
Referring to
As shown in
When the stethoscope head assembly 1 is in the high frequency mode, as illustrated by
When the stethoscope head assembly 1 is in the low frequency mode, as illustrated by
The first matching element 1215 can be a protrusion when the second matching element 213 is a recess, and in the compressed state of the stethoscope head assembly 1, the first matching element 1215 abuts against an inner wall of the second matching element 213, and the first matching element 1215 is received by the second matching element 213. In another embodiment, the first matching element 1215 can be a recess when the second matching element 213 is a protrusion, and in the compressed state of the stethoscope head assembly 1, the second matching element 213 abuts against an inner wall of the first matching element 1215, and the second matching element 213 is received by the first matching element 1215, as shown in
Referring to
The diaphragm 100a may further comprise a top layer (not shown). The top layer can be disposed on the top surface 111a of the membrane portion 110a. The top layer is composed of one or more elastic materials. The elastic material of the top layer can be silicon, soft tough paints, TPU, TPR, or the like. A thickness of the top layer is in a range of substantially 0.04 mm to 0.1 mm, preferably between 0.04 mm to 0.08 mm. The top layer may be constructed on the membrane portion 110a by spraying, injection molding, in-mold injecting, or the like.
Referring to
Referring to
Referring to Table 1, the stethoscope head assembly 80a has an acoustic attenuation value of 19.4 dB in 20-100 Hz, and 10.6 dB in 200-600 Hz. The stethoscope head assembly 80b has an acoustic attenuation value of 2.6 dB in 20-100 Hz, and 5.5 dB in 200-600 Hz. Relative error between the stethoscope head assembly 80a and 80b is in a range of 5.1 dB to 15.8 dB. Therefore, the stethoscope head assembly 80b is better for diagnosing the patient with pathological conditions at different frequencies, because the stethoscope head assembly 80b shows lower acoustic attenuation value than the stethoscope head assembly 80a.
Diaphragms of different diameters are also tested. In
Referring to Table 2, the relative error between a stethoscope head assembly 80c and 80d is in a range of 1.2 dB to 2.7 dB. Table 2 shows that the stethoscope head assembly 80d is better for diagnosing the patient with pathological conditions at different frequencies, because the stethoscope head assembly 80d shows lower acoustic attenuation value in Table 2 and
Table 1 and Table 2 show that the acoustic attenuation values of the stethoscope head assemblies are influenced by the material and the diameter of the main body. When 28.5-mm diameter main body is used, the stethoscope head assembly 80b has the acoustic attenuation value of 2.6 dB in 20-100 Hz. When 43.5-mm-diameter main body is used, the stethoscope head assembly 80d has an acoustic attenuation value of 1.0 dB in 20-100 Hz. Therefore, within the same frequency range, the larger the diameter of the main body, the smaller acoustic attenuation value it would be for the stethoscope head assemblies.
Table 3 shows that a relationship between an acoustic pressure ratio and an acoustic energy ratio. According to Table 1, the difference of the acoustic attenuation value between the stethoscope head assembly 80a and 80b in 20-1000 Hz is 10.1 dB. Table 3 indicates the acoustic energy ratio is 3.162 when the acoustic pressure ratio is 10, therefore the stethoscope head assembly 80b has improved by 3.162 times relative to the stethoscope head assembly 80a. According to Table 2, the difference of the acoustic attenuation value between the stethoscope head assembly 80c and 80d in 20-1000 Hz is 2 dB. Table 3 indicates the acoustic energy ratio is 1.413 when the acoustic pressure ratio is 3, and 1.122 when the acoustic pressure ratio is 1. Therefore, when the acoustic pressure ratio is 2, it can be calculated that the acoustic energy ratio is 1.3 by interpolation. Thus, the stethoscope head assembly 80d has improved by 1.3 times relative to the stethoscope head assembly 80c.
Referring to
In the exemplary embodiment, a four-axis dispenser 9 is adopted for rotatably spraying the liquefied elastic material onto both the first surface 62 of the membrane portion 60 and the connecting portions 61. The four-axis dispenser 9 facilitates the manufacturing process and reduces defect rate.
In the exemplary embodiment, the diaphragm may also be manufactured by three-dimensional printing (3D printing) methods, such as sterolithography (SLA), digital light processing (DLP), fused deposition modeling (FDM), selective laser sintering (SLD), selective laser melting (SLM), electronic beam melting (EBM), or laminated object manufacturing (LQM).
In the exemplary embodiment, the diaphragm may be designed as a single-use, disposable product for hygiene concerns. Referring to
Referring to
Referring to
Previous descriptions are only embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. Many variations and modifications according to the claims and specification of the disclosure are still within the scope of the claimed disclosure. In addition, each of the embodiments and claims does not have to achieve all the advantages or characteristics disclosed. Moreover, the abstract and the title only serve to facilitate searching patent documents and are not intended in any way to limit the scope of the claimed disclosure.
Claims
1. A diaphragm for a stethoscope head assembly, comprising:
- a membrane portion; and
- a sealing portion, extending from a periphery of the membrane portion and comprising a ring-shaped raised platform and a connecting portion extending downwardly from a periphery of the ring-shaped raised platform, wherein the connecting portion and the ring-shaped raised platform cooperatively form a ring-shaped receiving slot.
2. The diaphragm according to claim 1, wherein the diaphragm is made of an elastic material with a Shore A hardness of 30 to 80, and the elastic material comprises silicon, thermoset rubber, thermoplastic rubber, or a combination thereof.
3. The diaphragm according to claim 1, wherein a thickness of the membrane portion is less than a thickness of the ring-shaped raised platform of the sealing portion.
4. The diaphragm according to claim 3, wherein the thickness of the membrane portion falls within a range of 0.05 mm to 1 mm, and a diameter of the membrane portion falls within a range of 30 mm to 50 mm.
5. The diaphragm according to claim 1, wherein the ring-shaped raised platform comprises a platform top surface, a platform bottom surface, a ring-shaped first side wall protruding inwardly from a periphery of the platform top surface, a ring-shaped second side wall protruding outwardly from another periphery of the platform top surface, and
- the connecting portion comprises a latching portion and a resisting portion coupled between the latching portion and the ring-shaped raised platform.
6. The diaphragm according to claim 5, wherein the ring-shaped first side wall of the ring-shaped raised platform and a top surface of the membrane portion form an angle, and the angle falls within a range of 120 degrees to 180 degrees.
7. The diaphragm according to claim 1, wherein the sealing portion further comprises a first matching element arranged adjacent to the membrane portion and at the platform bottom surface of the ring-shaped raised platform.
8. The diaphragm according to claim 7, wherein the first matching element is a recess.
9. The diaphragm according to claim 7, wherein the first matching element is a protrusion.
10. The diaphragm according to claim 1, further comprising a coating layer disposed on a bottom surface of the membrane portion and a platform bottom surface of the ring-shaped raised platform.
11. The diaphragm according to claim 10, wherein the coating layer is made of silicon, soft touch paint, thermoplastic polyurethane, thermoplastic rubber, or a combination thereof.
12. The diaphragm according to claim 1, wherein the diaphragm is manufactured by 3D printing.
13. A stethoscope head assembly, comprising:
- a diaphragm comprising: a membrane portion; a sealing portion, extending from a periphery of the membrane portion and comprising a ring-shaped raised platform; a first matching element, arranged adjacent to the membrane portion at a bottom surface of the ring-shaped raised platform; and a connecting portion extending downwardly from a periphery of the ring-shaped raised platform;
- a main body, detachably coupled to the diaphragm and comprising a sound gathering member; wherein the sound gathering member comprises a second matching element aligned to conform in shape with the first matching element of the ring-shaped raised platform at a top surface of the sound gathering member, and the connecting portion and the ring-shaped raised platform of the diaphragm cooperatively form a ring-shaped receiving slot for receiving the sound gathering member of the main body.
14. The stethoscope head assembly according to claim 13, wherein the diaphragm is made of an elastic material with a Shore A hardness of 30 to 80, and the elastic material comprises silicon, thermoset rubber, thermoplastic rubber, or a combination thereof.
15. The stethoscope head assembly according to claim 13, wherein a thickness of the membrane portion is less than a thickness of the ring-shaped raised platform of the sealing portion.
16. The stethoscope head assembly according to claim 15, wherein the thickness of the membrane portion falls within a range of 0.05 mm to 1 mm, and a diameter of the membrane portion falls within a range of 30 mm to 50 mm.
17. The stethoscope head assembly according to claim 13, wherein the ring-shaped raised platform comprises a platform top surface, a platform bottom surface, a ring-shaped first side wall protruding inwardly from a periphery of the platform top surface, a ring-shaped second side wall protruding outwardly from another periphery of the platform top surface, and
- the connecting portion comprises a latching portion and a resisting portion coupled between the latching portion and the ring-shaped raised platform.
18. The stethoscope head assembly according to claim 17, wherein the ring-shaped first side wall of the ring-shaped raised platform and a top surface of the membrane portion form an angle, the angle falls within a range of 120 degrees to 180 degrees.
19. The stethoscope head assembly according to claim 13, wherein a width of the second matching element falls within a range of 1 mm to 3 mm.
20. The stethoscope head assembly according to claim 13, further comprising a relaxed state where the first matching element is not in contact with the second matching element, and a compressed state where the first matching element is in contact with the second matching element and abuts against the second matching element, wherein the stethoscope head assembly is transformed from the relaxed state to the compressed state by an external pressure.
21. The stethoscope head assembly according to claim 13, wherein the first matching element is a recess, and the second matching element is a protrusion.
22. The stethoscope head assembly according to claim 13, wherein the first matching element is a protrusion, and the second matching element is a recess.
23. The stethoscope head assembly according to claim 13, wherein an outer diameter of the ring-shaped receiving slot is equal to an outer diameter of the sound gathering member.
24. The stethoscope head assembly according to claim 13, further comprising an engaging portion of the sound gathering member arranged on a periphery of the sound gathering member, wherein a thickness of the engaging portion of the sound gathering member is equal to a height of the ring-shaped receiving slot.
25. The stethoscope head assembly according to claim 13, further comprising a coating layer disposed on a bottom surface of the membrane portion and a platform bottom surface of the ring-shaped raised platform.
26. The stethoscope head assembly according to claim 25, wherein the coating layer comprises silicon, soft touch paint, thermoplastic polyurethane, thermoplastic rubber, or a combination thereof.
27. The stethoscope head assembly according to claim 13, wherein the diaphragm is manufactured by 3D printing.
Type: Application
Filed: Jun 1, 2018
Publication Date: Dec 6, 2018
Inventors: TZU-CHIH LIN (Hsinchu), YU CHENG HUANG (Hsinchu)
Application Number: 15/995,153